Google Google Certifications ASSOCIATE-CLOUD-ENGINEER Questions & Answers

• Question 181:

  You want to configure 10 Compute Engine instances for availability when maintenance occurs. Your requirements state that these instances should attempt to automatically restart if they crash. Also, the instances should be highly available including during system maintenance. What should you do?

  A. Create an instance template for the instances. Set the `Automatic Restart' to on. Set the `On-host maintenance' to Migrate VM instance. Add the instance template to an instance group.

  B. Create an instance template for the instances. Set `Automatic Restart' to off. Set `On-host maintenance' to Terminate VM instances. Add the instance template to an instance group.

  C. Create an instance group for the instances. Set the `Autohealing' health check to healthy (HTTP).

  D. Create an instance group for the instance. Verify that the `Advanced creation options' setting for `do not retry machine creation' is set to off.

  Correct Answer: A

  https://cloud.google.com/compute/docs/instances/setting-instance-scheduling-options

  onHostMaintenance: Determines the behavior when a maintenance event occurs that might cause your instance to reboot.

  [Default] MIGRATE, which causes Compute Engine to live migrate an instance when there is a maintenance event.

  TERMINATE, which stops an instance instead of migrating it.

  automaticRestart: Determines the behavior when an instance crashes or is stopped by the system.

  [Default] true, so Compute Engine restarts an instance if the instance crashes or is stopped.

  false, so Compute Engine does not restart an instance if the instance crashes or is stopped.

• Question 182:

  You host a static website on Cloud Storage. Recently, you began to include links to PDF files on this site. Currently, when users click on the links to these PDF files, their browsers prompt them to save the file onto their local system. Instead, you want the clicked PDF files to be displayed within the browser window directly, without prompting the user to save the file locally. What should you do?

  A. Enable Cloud CDN on the website frontend.

  B. Enable `Share publicly' on the PDF file objects.

  C. Set Content-Type metadata to application/pdf on the PDF file objects.

  D. Add a label to the storage bucket with a key of Content-Type and value of application/pdf.

  Correct Answer: C

  To display PDF files directly within the browser window on a website hosted on Cloud Storage, you can follow these steps:

  In the Google Cloud Console, navigate to the Cloud Storage section and select the "Buckets" page.

  Select the bucket that contains the static website and the PDF files.

  From the "Actions" menu, select "Edit bucket" and then go to the "Website" tab.

  In the "Website Configuration" section, select the "Serve objects with this content type" option and enter "application/pdf" in the text field. This will cause PDF files to be served with the correct content type.

  Save the changes to the bucket configuration.

  After completing these steps, the PDF files on your website will be served with the correct content type and will be displayed directly within the browser window when clicked, without prompting the user to save the file locally.

• Question 183:

  You recently deployed a new version of an application to App Engine and then discovered a bug in the release. You need to immediately revert to the prior version of the application. What should you do?

  A. Run gcloud app restore.

  B. On the App Engine page of the GCP Console, select the application that needs to be reverted and click Revert.

  C. On the App Engine Versions page of the GCP Console, route 100% of the traffic to the previous version.

  D. Deploy the original version as a separate application. Then go to App Engine settings and split traffic between applications so that the original version serves 100% of the requests.

  Correct Answer: C

  Reference: https://medium.com/google-cloud/app-engine-project-cleanup-9647296e796a

  Option A is wrong as gcloud app restore was used for backup and restore and has been deprecated.Option B is wrong as there is no application revert functionality available.Option D is wrong as App Engine maintains version and need not be redeployed.

• Question 184:

  You need to select and configure compute resources for a set of batch processing jobs. These jobs take around 2 hours to complete and are run nightly. You want to minimize service costs. What should you do?

  A. Select Google Kubernetes Engine. Use a single-node cluster with a small instance type.

  B. Select Google Kubernetes Engine. Use a three-node cluster with micro instance types.

  C. Select Compute Engine. Use preemptible VM instances of the appropriate standard machine type.

  D. Select Compute Engine. Use VM instance types that support micro bursting.

  Correct Answer: C

  For cost-saving and not immediate fault-tolerant workloads like batch jobs use Preemptible VM instances

• Question 185:

  You are running an application on multiple virtual machines within a managed instance group and have autoscaling enabled. The autoscaling policy is configured so that additional instances are added to the group if the CPU utilization of instances goes above 80%. VMs are added until the instance group reaches its maximum limit of five VMs or until CPU utilization of instances lowers to 80%. The initial delay for HTTP health checks against the instances is set to 30 seconds. The virtual machine instances take around three minutes to become available for users. You observe that when the instance group autoscales, it adds more instances then necessary to support the levels of end-user traffic. You want to properly maintain instance group sizes when autoscaling. What should you do?

  A. Set the maximum number of instances to 1.

  B. Decrease the maximum number of instances to 3.

  C. Use a TCP health check instead of an HTTP health check.

  D. Increase the initial delay of the HTTP health check to 200 seconds.

  Correct Answer: D

  The virtual machine instances take around three minutes to become available for users.

• Question 186:

  You've deployed a microservice called myapp1 to a Google Kubernetes Engine cluster using the YAML file specified below: You need to refactor this configuration so that the database password is not stored in plain text. You want to follow Google-recommended practices. What should you do?

  

  A. Store the database password inside the Docker image of the container, not in the YAML file.

  B. Store the database password inside a Secret object. Modify the YAML file to populate the DB_PASSWORD environment variable from the Secret.

  C. Store the database password inside a ConfigMap object. Modify the YAML file to populate the DB_PASSWORD environment variable from the ConfigMap.

  D. Store the database password in a file inside a Kubernetes persistent volume, and use a persistent volume claim to mount the volume to the container.

  Correct Answer: B

  In kubernetes we always use secrets to keep sensitive and confidential data.

• Question 187:

  You create a new Google Kubernetes Engine (GKE) cluster and want to make sure that it always runs a supported and stable version of Kubernetes. What should you do?

  A. Enable the Node Auto-Repair feature for your GKE cluster.

  B. Enable the Node Auto-Upgrades feature for your GKE cluster.

  C. Select the latest available cluster version for your GKE cluster.

  D. Select "Container-Optimized OS (cos)" as a node image for your GKE cluster.

  Correct Answer: B

  "Creating or upgrading a cluster by specifying the version as does not provide automatic upgrades. Enable automatic node upgrades to ensure that the nodes in your cluster up to date with the latest stable version." --source: https:// cloud.google.com/kubernetes-engine/versioning-and-upgrades

• Question 188:

  You have an instance group that you want to load balance. You want the load balancer to terminate the client SSL session. The instance group is used to serve a public web application over HTTPS. You want to follow Google-recommended practices. What should you do?

  A. Configure an HTTP(S) load balancer.

  B. Configure an internal TCP load balancer.

  C. Configure an external SSL proxy load balancer.

  D. Configure an external TCP proxy load balancer.

  Correct Answer: A

  Reference: https://cloud.google.com/load-balancing/docs/https/

  According to this guide for setting up an HTTP (S) load balancer in GCP: The client SSL session terminates at the load balancer. Sessions between the load balancer and the instance can either be HTTPS (recommended) or HTTP.

• Question 189:

  You have 32 GB of data in a single file that you need to upload to a Nearline Storage bucket. The WAN connection you are using is rated at 1 Gbps, and you are the only one on the connection. You want to use as much of the rated 1 Gbps as possible to transfer the file rapidly. How should you upload the file?

  A. Use the GCP Console to transfer the file instead of gsutil.

  B. Enable parallel composite uploads using gsutil on the file transfer.

  C. Decrease the TCP window size on the machine initiating the transfer.

  D. Change the storage class of the bucket from Nearline to Multi-Regional.

  Correct Answer: B

  Correct answer is B as the bandwidth is good and its a single file, gsutil parallel composite uploads can be used to split the large file and upload in parallel.Refer GCP documentation - Transferring Data to GCP andamp

• Question 190:

  You have one project called proj-sa where you manage all your service accounts. You want to be able to use a service account from this project to take snapshots of VMs running in another project called proj-vm. What should you do?

  A. Download the private key from the service account, and add it to each VMs custom metadata.

  B. Download the private key from the service account, and add the private key to each VM's SSH keys.

  C. Grant the service account the IAM Role of Compute Storage Admin in the project called proj-vm.

  D. When creating the VMs, set the service account's API scope for Compute Engine to read/write.

  Correct Answer: C

  Grant the service account the IAM Role of Compute Storage Admin in the project called proj-vm.